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CN-122006593-A - Multi-stage reactor for full-fraction hydrogenation of medium-low temperature coal tar

CN122006593ACN 122006593 ACN122006593 ACN 122006593ACN-122006593-A

Abstract

The invention relates to the technical field of coal tar, in particular to a multistage reactor for full-fraction hydrogenation of medium-low temperature coal tar, which comprises a base and a new hydrogen treatment mechanism, wherein the new hydrogen treatment mechanism comprises a first outer box fixedly connected to the upper end surface of the base, a deoxidizing assembly, a converging funnel, a desulfurizing assembly and a drying assembly are sequentially arranged in the first outer box from top to bottom, a new hydrogen compressor and an output assembly are respectively arranged on two sides of the first outer box, and are communicated with the interior of the first outer box, and the new hydrogen treatment mechanism sequentially deoxidizes, desulfurates and dries fresh hydrogen before the new hydrogen treatment mechanism is input into the reactor through the deoxidizing assembly, the desulfurizing assembly, the drying assembly and the output assembly, so that harmful impurities in the hydrogen can be effectively removed, catalyst poisoning deactivation can be avoided, side reactions can be inhibited, and the reactor and subsequent equipment can be prevented from being corroded.

Inventors

  • WANG YANG
  • WANG BING
  • QIN YIJUN
  • ZHAO JINCHUAN
  • LIU LIANGGUO
  • LIU WEIYI

Assignees

  • 新疆汇安能源有限公司

Dates

Publication Date
20260512
Application Date
20260415

Claims (9)

  1. 1. A multistage reactor for full distillate hydrogenation of medium and low temperature coal tar, comprising: A base (1); The novel hydrogen treatment mechanism (2), the novel hydrogen treatment mechanism (2) comprises a first outer box (21) fixedly connected to the upper end face of the base (1), a deoxidizing assembly (24), a converging funnel (25), a desulfurizing assembly (26) and a drying assembly (27) are sequentially arranged in the first outer box (21) from top to bottom, a novel hydrogen compressor (22) and an output assembly (28) are respectively arranged on two sides of the first outer box (21), and the novel hydrogen compressor (22) and the output assembly (28) are communicated with the inside of the first outer box (21); The circulating hydrogen treatment mechanism (3), the circulating hydrogen treatment mechanism (3) comprises a second outer box (31) fixedly connected to the upper end face of the base (1), a multi-stage treatment assembly (33) is arranged in the second outer box (31), a selection assembly (35) is arranged on the side face of the second outer box (31), and the selection assembly (35) is communicated with the multi-stage treatment assembly (33); The cold hydrogen processor (4), cold hydrogen processor (4) fixed connection is at the up end of base (1), and cold hydrogen processor (4) and controller electric connection, the output of cold hydrogen processor (4) is fixed to be linked together and is had cold hydrogen output tube (41), and the other end and the hydrogenation reactor intercommunication of cold hydrogen output tube (41).
  2. 2. The multistage reactor for full distillate hydrogenation of medium and low temperature coal tar according to claim 1, wherein the side of the base (1) is provided with a controller; The side face of the upper position of the first outer box (21) is provided with a drawing opening (211), sliding rails (212) are fixedly connected to two sides of the inner wall of the drawing opening (211) of the first outer box (21), the sliding direction of each sliding rail (212) faces the drawing opening (211), a new hydrogen compressor (22) is fixedly connected to one side of the first outer box (21), the new hydrogen compressor (22) is electrically connected with a controller, the input end of the new hydrogen compressor (22) is fixedly connected with a new hydrogen inlet pipe (221), the other end of the new hydrogen inlet pipe (221) is communicated with fresh hydrogen in a boundary region, and the output end of the new hydrogen compressor (22) is fixedly connected with a new hydrogen output pipe (222); The upper end face of the first outer box (21) is provided with a first metering valve (23), the first metering valve (23) is electrically connected with the controller, the input end of the first metering valve (23) is communicated with the other end of the new hydrogen output pipe (222), and the output end of the first metering valve (23) is communicated with the input end of the upper end face of the first outer box (21).
  3. 3. The multistage reactor for full distillate hydrogenation of medium and low temperature coal tar according to claim 2, wherein the deoxidizing component (24) comprises a hollow box (241) which is connected between two sliding rails (212) in a sliding way, the hollow box (241) corresponds to the position of the pumping port (211), two sides of the hollow box (241) are clamped with a blocking net (242), a plurality of elastic rods (243) are fixedly connected with an internal rectangular array of the hollow box (241), the interior of the hollow box (241) is filled with a normal temperature palladium-based deoxidizing agent, and the elastic rods (243) are buried by the normal temperature palladium-based deoxidizing agent; The converging funnel (25) is fixedly connected to the inside of the first outer box (21), and the large-caliber end face of the converging funnel (25) faces the hollow box (241).
  4. 4. The multistage reactor for full fraction hydrogenation of medium and low temperature coal tar according to claim 3, wherein the desulfurization component (26) comprises a communication plate (261) fixedly connected inside a first outer tank (21), a plurality of communication holes (262) are formed in a linear array at the periphery of the communication plate (261), a storage tank (263) is fixedly connected at the center of the communication plate (261), zinc oxide is stored in the storage tank (263) for desulfurization, an exhaust plate (264) is clamped at the inner bottom of the storage tank (263), an intercommunication pipe (268) is fixedly connected at the input end of the exhaust plate (264), the other end of the intercommunication pipe (268) is communicated with the small caliber end of a converging funnel (25), a plurality of inclined plates (265) with different specifications are sequentially and fixedly connected from top to bottom in the periphery of the interior of the storage tank (263), a pressurizing plate (266) is fixedly connected at the inner top of the storage tank (263), a first material replacement valve (267) is fixedly connected at the replacement end of the storage tank (263), and the other end of the first material replacement valve (267) penetrates through the first outer tank (21); Drying component (27) are including fixed connection in inside perforated plate (271) of first outer case (21), the one end that bin (263) was kept away from to each hole of perforated plate (271) is all fixed to be linked together and is had communicating pipe (272), inside fixedly connected with drying cabinet (273) that first outer case (21) are located below perforated plate (271), each the other end of communicating pipe (272) all communicates with drying cabinet (273), the inside packing of drying cabinet (273) has molecular sieve drier, the interior bottom and the interior middle part of drying cabinet (273) are fixedly connected with drying rod (274) and heating rod (275) respectively, and drying rod (274), heating rod (275) all with controller electric connection, the side fixed intercommunication of drying cabinet (273) has discharge valve (276), the output of first outer case (21) communicates with the inside of drying cabinet (273), the output of discharge valve (276) communicates with the external world.
  5. 5. The multistage reactor for full distillate hydrogenation of medium and low temperature coal tar according to claim 1, wherein the output assembly (28) comprises a first three-way valve (281) fixedly connected to the side of the first outer tank (21), and the first three-way valve (281) is electrically connected to a controller; One input end of the first three-way valve (281) is communicated with the output end of the drying box (273) through a pipeline, two output ends of the first three-way valve (281) are fixedly communicated with a new hydrogen main pipe (282) and a new hydrogen branch pipe (283) respectively, the other end of the new hydrogen main pipe (282) is communicated with the hydrogenation reactor, and the other end of the new hydrogen branch pipe (283) is communicated with one input end of the cold hydrogen processor (4).
  6. 6. The multistage reactor for full distillate hydrogenation of medium and low temperature coal tar according to claim 5, wherein the upper end surface of the second outer tank (31) is fixedly connected with a second metering valve (32), the second metering valve (32) is electrically connected with a controller, the input end of the second metering valve (32) is fixedly communicated with a circulating hydrogen inlet pipe (321), and the other end of the circulating hydrogen inlet pipe (321) is communicated with the outlet end of the reactor; The multistage treatment assembly (33) comprises a plurality of partition plates (331) which are fixedly connected to the inside of the second outer box (31) in a linear array, the inside of the second outer box (31) is divided into at least four independent installation areas from top to bottom by the partition plates (331), the four installation areas are fixedly connected with a desulfurizer (332), a deamination device (333), a dealumination device (334) and a purifier (335) respectively from top to bottom in the inside of the second outer box (31), the desulfurizer (332), the deamination device (333), the dealumination device (334) and the purifier (335) are all electrically connected with a controller, the replacement ends of the desulfurizer (332), the deamination device (333), the dealumination device (334) and the purifier (335) are fixedly communicated with a second material changing valve (336), and the other end of the second material changing valve (336) penetrates the second outer box (31).
  7. 7. The multistage reactor for full distillate hydrogenation of medium and low temperature coal tar according to claim 6, wherein the output end of the second metering valve (32) is communicated with the input end of the desulfurizer (332), the output end of the desulfurizer (332) is fixedly communicated with a transmission pipe (34), and the other end of the transmission pipe (34) is communicated with the input end of the deamination device (333); The selection component (35) comprises a first switching valve (351) and a second pressurizing pump (355) which are respectively and fixedly connected to the second outer box (31) and positioned on two sides of the deamination device (333), the first switching valve (351) and the second pressurizing pump (355) are electrically connected with the controller, the input end of the first switching valve (351) is communicated with the output end of the deamination device (333) through a pipeline, two output ends of the first switching valve (351) are respectively and fixedly communicated with a first branch pipe (352) and a first branch pipe (353), and the other end of the first branch pipe (352) is communicated with the input end of the second pressurizing pump (355).
  8. 8. The multistage reactor for full fraction hydrogenation of medium and low temperature coal tar according to claim 7, wherein the second outer tank (31) is fixedly connected with a second switching valve (356) at the side surface of the light hydrocarbon removal device (334), the second switching valve (356) is electrically connected with a controller, one output end of the second switching valve (356) is communicated with the input end of the light hydrocarbon removal device (334) through a pipeline, the input end of the second switching valve (356) is fixedly communicated with a second branch pipe (357), the other output end of the second switching valve (356) is fixedly communicated with a second branch pipe (358), and the other end of the second branch pipe (357) is communicated with the output end of the second pressurizing pump (355); The second outer box (31) is positioned at two sides of the purifier (335) and is fixedly connected with a first pressurizing pump (354) and a third switching valve (359), the first pressurizing pump (354) and the third switching valve (359) are electrically connected with the controller, the other end of the first branched pipe (353) is communicated with the input end of the first pressurizing pump (354), and the output end of the first pressurizing pump (354) is fixedly communicated with a parallel pipe (3510); the output end of the third switching valve (359) is communicated with the input end of the purifier (335) through a pipeline, and the two input ends of the third switching valve (359) are respectively communicated with the other ends of the parallel pipe (3510) and the second branch pipe (358).
  9. 9. The multistage reactor for full-fraction hydrogenation of medium and low temperature coal tar according to claim 1, wherein the second outer tank (31) is located at the side surfaces of the deamination device (333), the light hydrocarbon removal device (334) and the purifier (335) and is fixedly connected with an opening and closing valve (36), the opening and closing valve (36) is electrically connected with the controller, the input end of each opening and closing valve (36) is communicated with the output end of the corresponding deamination device (333), the light hydrocarbon removal device (334) and the purifier (335) through a pipeline, the output end of each opening and closing valve (36) is fixedly communicated with a three-inlet-one-outlet pipe (37), the output end of the three-inlet-one-outlet pipe (37) is fixedly communicated with a second three-way valve (38), the second three-way valve (38) is electrically connected with the controller, the two output ends of the second three-way valve (38) are respectively fixedly communicated with a circulating hydrogen output manifold (381) and a circulating hydrogen output branch pipe (381), the other end of the circulating hydrogen output manifold (381) is communicated with the hydrogenation reactor, and the other end of the circulating hydrogen output manifold (382) is communicated with the other input end of the cold hydrogen processor (4).

Description

Multi-stage reactor for full-fraction hydrogenation of medium-low temperature coal tar Technical Field The invention relates to the technical field of coal tar, in particular to a multistage reactor for full-fraction hydrogenation of medium-low temperature coal tar. Background A multi-stage reactor for hydrogenating the full fraction of medium-low-temp coal tar is composed of serially connected multiple beds for hydrorefining and hydromodifying the full fraction of medium-low-temp coal tar and hydrogen, buffer liquid separation, pressurizing by new hydrogen compressor, desulfurizing, dewatering, purifying, introducing the hydrogen to reaction system, high-pressure gas-liquid separation, desulfurizing, optional deamination and pre-treatment of light hydrocarbon, cyclic reuse, cooling, regulating flow and pressure, and controlling temp. In the existing multistage reactor for full-fraction hydrogenation of medium-low temperature coal tar, no perfect targeted pretreatment flow is arranged before new hydrogen and circulating hydrogen enter the reactor, and the new hydrogen is not pressurized, desulfurized and dehydrated, is easy to carry free liquid drops, sulfides, moisture and other impurities into the system, is easy to cause liquid impact damage of a new hydrogen compressor and poisoning and deactivation of a catalyst, and is not subjected to high-pressure gas-liquid separation, desulfurization, deamination and light hydrocarbon removal treatment, so that oil, water, hydrogen sulfide, ammonia and light hydrocarbons are continuously accumulated in the system, and further the problems of salt formation blockage of equipment and pipelines, reduction of hydrogen partial pressure of the system, insufficient hydrogenation reaction depth, shortened device operation period and the like are caused. Disclosure of Invention Aiming at the defects existing in the prior art, the invention provides a multistage reactor for full-fraction hydrogenation of medium-low temperature coal tar, which can effectively solve the problems that the pretreatment of new hydrogen and circulating hydrogen in the prior art is insufficient and the stable operation of the device is affected. In order to achieve the above purpose, the invention is realized by the following technical scheme: the invention provides a multistage reactor for full-fraction hydrogenation of medium-low temperature coal tar, which comprises a base; The novel hydrogen treatment mechanism comprises a first outer box fixedly connected to the upper end face of the base, the first outer box, the converging funnel, the desulfurization component and the drying component are respectively arranged on two sides of the first outer box, the novel hydrogen compressor and the output component are both connected with the first outer box, the circulating hydrogen treatment mechanism comprises a second outer box fixedly connected to the upper end face of the base, a multistage treatment component is arranged in the second outer box, a selection component is arranged on the side face of the second outer box, and the selection component is communicated with the multistage treatment component; The cold hydrogen processor is fixedly connected to the upper end face of the base, the cold hydrogen processor is electrically connected with the controller, the output end of the cold hydrogen processor is fixedly communicated with a cold hydrogen output pipe, and the other end of the cold hydrogen output pipe is communicated with the hydrogenation reactor. Preferably, a controller is arranged on the side surface of the base; The side face of the upper position of the first outer box is provided with a drawing opening, sliding rails are fixedly connected to two sides of the inner wall of the drawing opening of the first outer box, the sliding direction of each sliding rail faces the drawing opening, the new hydrogen compressor is fixedly connected to one side of the first outer box and is electrically connected with the controller, the input end of the new hydrogen compressor is fixedly communicated with a new hydrogen inlet pipe, the other end of the new hydrogen inlet pipe is communicated with boundary zone fresh hydrogen, and the output end of the new hydrogen compressor is fixedly communicated with a new hydrogen output pipe; The upper end face of the first outer box is provided with a first metering valve, the first metering valve is electrically connected with the controller, the input end of the first metering valve is communicated with the other end of the new hydrogen output pipe, and the output end of the first metering valve is communicated with the input end of the upper end face of the first outer box. Compared with the prior art, the technical scheme provided by the invention has the following beneficial effects: 1. The deoxidation component, the desulfurization component, the drying component and the output component in the new hydrogen treatment mechanism are used for sequentially